CN102536777A - Method for detecting function of oil temperature relay of air compressor - Google Patents
Method for detecting function of oil temperature relay of air compressor Download PDFInfo
- Publication number
- CN102536777A CN102536777A CN2012100523274A CN201210052327A CN102536777A CN 102536777 A CN102536777 A CN 102536777A CN 2012100523274 A CN2012100523274 A CN 2012100523274A CN 201210052327 A CN201210052327 A CN 201210052327A CN 102536777 A CN102536777 A CN 102536777A
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- China
- Prior art keywords
- air compressor
- oil temperature
- temperature relay
- oil
- relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 23
- 239000010725 compressor oil Substances 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
A method for detecting the function of an oil temperature relay of an air compressor includes the following steps: firstly, a power supply circuit of the air compressor is confirmed to be disconnected, a temperature sensor is inserted into the bottom of the air compressor through an oil injecting port of the air compressor and fastened; a radiating fan of the air compressor is blocked by a baffle, the fan is prevented from radiating, and the internal temperature of the air compressor is forced to rise; a control circuit of an air compressor is energized, a valve on a control pipeline is controlled to exhaust air, at the same time, the pressure in the control pipeline is monitored through a pressure gauge to maintain the pressure within 8.5 to 10 bars; when the oil temperature relay is in operation, a contact is disconnected and further the control circuit of the air compressor is disconnected, at this time the air compressor is stopped from rotating, reading of an oil sensor are checked, and the temperature at this time is required to be within 102 to 114 DEG C; when the air compressor is cooled down below 70 DEG C, the contact of the oil temperature relay is automatically reset and closed, and the air compressor is started again; and in case that the requirement can be met according to the test, the oil temperature relay is required to be replaced. According to the invention, the function of the oil temperature relay can be detected on a train without demounting parts; and further, the method is simple and convenient to operate, is highly practical, greatly improves the working efficiency, and is clear and visual in detecting process.
Description
Technical field
The invention belongs to vehicle testing and measuring technology technical field, relate to a kind of EMU compressor oil temperature relay function detecting method.
Background technique
Pressurized air on the rail motor set is provided by air compressor, and the inside cooling oil oil temperature that air compressor oil temperature relay reasons such as heat radiation is unusual when being used for preventing the air compressor operation cause is too high and bring the damage to air compressor.The electric contact of oil temperature relay is connected in the power supply circuits of air compressor, if the compressor oil temperature is too high, and the automatic disconnection of oil temperature relay electric contact, thus the air compressor power supply circuits are broken off, air compressor shuts down, and plays a protective role.
At present; Maintenance air compressor oil temperature relay need be pulled down relay and detect; Therefore because the dismounting relay need be pulled down whole air compressor unit and complex operation, need that invention is a kind of to need not to dismantle the method that relay can detect its function ON TRAINS.
Summary of the invention
Technical problem to be solved by this invention provides a kind of need not oil temperature relay is dismantled the method to its Function detection of just can accomplishing.
For solving the problems of the technologies described above, the present invention provides a kind of compressor oil temperature relay function detecting method, it is characterized in that comprising the following steps:
(1) confirm that air compressor power supply line does not have electricity, with the pouring orifice insertion air compressor bottom of temperature transducer through air compressor, and fastening;
(2) radiation fan of air compressor is blocked through baffle plate, stoped the fan heat radiation, force the temperature rise of air compressor interior oil;
(3) give the power supply of air compressor control loop, the valve of handling on the pilot line carries out exhaust, through the pressure in the pressure gauge monitoring pilot line, makes pressure maintain 8.5-10bar simultaneously;
The contact was broken off when (4) oil temperature relay moved; Thereby break off the air compressor control loop, this moment, air compressor shut down, and checked the reading of temperature transducer; Requirement temperature this moment is in 102-114 ℃ of scope; Wait for that air compressor is cooled to below 70 ℃, the oil temperature relay contact closure that automatically resets, air compressor should be reset; If not meeting the demands, test do not need to change oil temperature relay.
The present invention is through blocking air compressor radiation fan air port with baffle plate; Pressure makes the oily temperature rise of air compressor cooling oil; Monitor the oil temperature of cooling oil simultaneously in real time through oil temperature sensor; And check the temperature when oil temperature relay breaks off, whether normal with reference value to recently judging the oil temperature relay function.Need not to dismantle device, can realize detection ON TRAINS its function, easy and simple to handle, practical, greatly to increase work efficiency, testing process is clear and intuitive.
Description of drawings
Accompanying drawing is principle of the invention figure.
Embodiment
With reference to accompanying drawing, it is following to detect step:
1, confirm that air compressor power supply line does not have electricity, with the pouring orifice 3 insertion air compressor bottoms of temperature transducer 2 through air compressor 6, and fastening;
2, the radiation fan 1 of air compressor 6 is blocked through baffle plate 5, stoped the normal heat radiation of fan to force the temperature rise of air compressor interior oil;
3, give the air compressor control loop 11 power supplies, the valve 9 on the pilot line 8 carries out exhaust, through the pressure in pressure gauge 4 monitored pipeline 8, makes pressure maintain 8.5-10bar simultaneously, can make compressor oil temperature fast rise, protects air pipe line simultaneously;
4, contact 10 is broken off during oil temperature relay 7 action, thereby breaks off air compressor control loop 11, and this moment, air compressor shut down, and checked the reading of temperature transducer 2, requires this moment temperature in 102-114 ℃ of scope.Wait for that air compressor is cooled to below 70 ℃, oil temperature relay contact 7 closure that automatically resets, air compressor should be reset; If not meeting the demands, test do not need to change oil temperature relay.
Claims (1)
1. a compressor oil temperature relay function detecting method is characterized in that comprising the following steps:
(1) confirm that air compressor power supply line does not have electricity, with the pouring orifice insertion air compressor bottom of temperature transducer through air compressor, and fastening;
(2) radiation fan of air compressor is blocked through baffle plate, stoped the fan heat radiation, force the temperature rise of air compressor interior oil;
(3) give the power supply of air compressor control loop, the valve of handling on the pilot line carries out exhaust, through the pressure in the pressure gauge monitoring pilot line, makes pressure maintain 8.5-10bar simultaneously;
The contact was broken off when (4) oil temperature relay moved; Thereby break off the air compressor control loop, this moment, air compressor shut down, and checked the reading of temperature transducer; Requirement temperature this moment is in 102-114 ℃ of scope; Wait for that air compressor is cooled to below 70 ℃, the oil temperature relay contact closure that automatically resets, air compressor should be reset; If not meeting the demands, test do not need to change oil temperature relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100523274A CN102536777A (en) | 2012-03-01 | 2012-03-01 | Method for detecting function of oil temperature relay of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100523274A CN102536777A (en) | 2012-03-01 | 2012-03-01 | Method for detecting function of oil temperature relay of air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102536777A true CN102536777A (en) | 2012-07-04 |
Family
ID=46344529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100523274A Pending CN102536777A (en) | 2012-03-01 | 2012-03-01 | Method for detecting function of oil temperature relay of air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102536777A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030266U (en) * | 1988-03-10 | 1989-01-04 | 湘潭矿业学院 | Energy-saving protection device for air press |
| CN2160774Y (en) * | 1993-04-08 | 1994-04-06 | 哈尔滨市东煤电子电器元件厂 | Safety protection monitoring alarm for air-compressor |
| JP2005067532A (en) * | 2003-08-27 | 2005-03-17 | Fujitsu Ten Ltd | Relay temperature rise preventive device |
| CN2912067Y (en) * | 2006-07-11 | 2007-06-13 | 许晓华 | Thermal protecting system for dynamo of air compressor |
| JP2008003814A (en) * | 2006-06-21 | 2008-01-10 | Shin Meiwa Ind Co Ltd | Control circuit with fault diagnosis function |
| CN202101792U (en) * | 2011-03-19 | 2012-01-04 | 辽宁省电力有限公司葫芦岛供电公司 | Monitoring device for pressure thermometer |
-
2012
- 2012-03-01 CN CN2012100523274A patent/CN102536777A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030266U (en) * | 1988-03-10 | 1989-01-04 | 湘潭矿业学院 | Energy-saving protection device for air press |
| CN2160774Y (en) * | 1993-04-08 | 1994-04-06 | 哈尔滨市东煤电子电器元件厂 | Safety protection monitoring alarm for air-compressor |
| JP2005067532A (en) * | 2003-08-27 | 2005-03-17 | Fujitsu Ten Ltd | Relay temperature rise preventive device |
| JP2008003814A (en) * | 2006-06-21 | 2008-01-10 | Shin Meiwa Ind Co Ltd | Control circuit with fault diagnosis function |
| CN2912067Y (en) * | 2006-07-11 | 2007-06-13 | 许晓华 | Thermal protecting system for dynamo of air compressor |
| CN202101792U (en) * | 2011-03-19 | 2012-01-04 | 辽宁省电力有限公司葫芦岛供电公司 | Monitoring device for pressure thermometer |
Non-Patent Citations (1)
| Title |
|---|
| 张立平: "温度继电器温度特性自动检测方法研究及应用", 《传感技术学报》 * |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |